Explanation

• Black Gold: Petroleum (Crude Oil)
• Color: Dark black / brownish black
• Main Uses: Fuel, petrol, diesel, kerosene, plastics
• Importance: Backbone of modern industry and transport

Additional information:

• Top Oil-Producing Countries:
  1. Saudi Arabia
  2. USA
  3. Russia
  4. Iraq
  5. Iran

Last verified on 16-06-2026

Explanation

• Zurich is a city in Switzerland.
• It is the largest city of Switzerland by population (400,000+).
• Zurich is a major global center for banking and finance.
• It is located in the north-central part of Switzerland.

Last verified on 16-06-2026

Explanation

China Capital is Beijing.

China Currency is Chinese Yuan.

China official language is Mandarin.

China located is in Continent Asia.

China Primary Religion is N/A.

China Head of Govt. is President - Xi Jinping.

China Parliament called National People’s Assembly.

Tricks for Remember

Last verified on 16-06-2026

Explanation

• Inflation means a rise in prices and a fall in the value of money.
• It reduces the purchasing power of money over time.
• With inflation, the same amount of money buys fewer goods and services.

Last verified on 16-06-2026

Explanation

To convert a fraction to %, multiply by 100

7/20 × 100 = 7 × 5 = 35%.

Last verified on 16-06-2026

Explanation

• An irrational number cannot be expressed as a simple fraction.
• √2 is irrational because it cannot be expressed as a fraction of two integers.

Last verified on 16-06-2026

Explanation

• Largest Arms Exporter: USA
• Second Largest: Russia
• Third Largest: France
• Main Buyers: Middle East, Europe, Asia
• Main Products: Fighter jets, missiles, defense systems, military technology

Last verified on 16-06-2026

Explanation

• Bahadur Shah Zafar is the last Mughal emperor of India (reigned 1837–57).
• He was a poet, musician, and calligrapher, more an aesthete than a political leader.
• He was born October 24, 1775, in Delhi, India.
• He died November 7, 1862, in Rangoon [now Yangon], Myanmar.

Last verified on 01-06-2026

Explanation

• The Arabian Sea is part of the Indian Ocean.
• It is located in the northwestern part of the Indian Ocean.
• It lies between the Indian Peninsula and Arabian Peninsula.
• It covers an area of about 3.86 million km².

Additional information:

• Location: Between India, Pakistan, Arabian Peninsula, and Horn of Africa
• It connects with the Persian Gulf through the Gulf of Oman.

Last verified on 16-06-2026

Explanation

• Email stands for Electronic Mail.
• It is a method of sending and receiving digital messages through the internet.
• The term electronic mail has been used with its modern meaning since 1975.
• The shorter form E-mail became common around 1979.

Additional information:

Parts of a valid email address:

1. Email Prefix
2. Email Domain

Address: example@mail.com

1. example = Email Prefix
2. mail.com = Email Domain

Last verified on 16-06-2026